Error 80070057 has two possible causes. Either someone is attempting to open the company file outside of QuickBooks, or BitDefender (antivirus software) is blocking communication ports between computers. Follow the provided instructions to fix the problem.

Troubleshoot and resolve this Windows XP error (shows three different possible message variants), Article describes how to check the Windows compatibility mode for the QuickBooks desktop icon and QuickBooks executable file, and how to verify that the company file isn't damaged.

Update QuickBooks to the latest release, create a new user account, and ensure that the QBDataServiceUser(XX) has appropriate permissions to access the file.

Steps to resolve error 6189 by setting appropriate access permissions for the folder that contains your company data file.

Troubleshoot and fix the problem where you can't open a multiuser company file but others are able to open it normally.

This article explains why the Automated Password Reset Tool may not be work and gives instructions for solving the issue.